Double sealing pouring assembly

ABSTRACT

A double sealing pouring assembly for use on a container having a dispensing neck comprising a collar which is secured onto the neck, a retractable pouring spout positioned within the collar at retracted and extended positions, the assembly having means for locking the spout within the collar at the extended position of the spout to provide two leak-proof seals between the spout and the collar.

Elite States atent n 1 Maynard, Jr.

[ Dec. 30, 1975 DOUBLE SEALING POURING ASSEMBLY [76] Inventor: Walter P. Maynard, Jr., 6650-A Peachtree Industrial Blvd., Atlanta, Ga. 30340 [22] Filed: June 28, 1974 [21] Appl. No.: 483,987

[52] US. Cl. 222/525 [51] Int. Cl. B67D 5/12 [58] Field of Search 222/478, 479, 481, 522,

[561 References Cited UNITED STATES PATENTS 2,543,909 3/1951 Hatheway, Jr. 222/479 2,791,357 5/1957 Nelson r 222/525 3,323,693 6/1967 Miller 222/479 3,372,846 3/1968 Berkus 222/479 Primary ExaminerAllen N. Knowles Assistant Examiner--Norman L. Stack, Jr. Attorney, Agent, or Firm-Newton, Hopkins & Ormsby [57] ABSTRACT A double sealing pouring assembly for use on a container having a dispensing neck comprising a collar which is secured onto the neck, a retractable pouring spout positioned within the collar at retracted and extended positions, the assembly having means for locking the spout within the collar at the extended position of the spout to provide two leak-proof seals between the spout and the collar.

6 Claims, 6 Drawing Figures US. Patent Dec. 30, 1975 Sheet 1of3 3,929,264

US. Patent Dec. 30, 1975 Sheet 3 of3 3,929,264

DOUBLE SEALING POURING ASSEMBLY BACKGROUND OF THE INVENTION The invention relates to a pouring device for use on a container and more particularly to a pouring device with a retractable spout slidably positioned within a collar which is operably connected to a container having a dispensing neck.

The pouring spout which is now on many containers, especially those types which are used for storage of small amounts of gasoline, are bulky, cumbersome to use and are prone to leak. To place that spout in operable position. it is necessary to remove it from the neck of the container and then place it on the neck in a pouring position. Such containers usually require a separate vent hole through the top of the container to provide a satisfactory minimum rate of flow.

To close the container after use in a leakproof manner has also been a problem with previous containers.

A number of devices of the prior art have attempted to provide less cumbersome types of pouring spouts. The patent to Frey (U.S. Pat. No. 1,468,360, issued Sept. 18, 1923) shows a retractable pouring spout which is slidably received within a collar secured within cap on the neck ofa container. Dobbins (U.S. Pat. No. 2,773,632, issued Dec. 11, 1956) shows an extensible flexible pouring spout which is adapted to be pressed into a nozzle on a container after the nozzle is secured to the container.

The patents to Rike (U.S. Pat. No. 2,772,037, issued Nov. 27, 1956) and Robert (U.S. Pat. No. 3,752,369, issued Aug. 14, 1973) both disclose pouring spouts which are normally closed by a diaphragm that can be removed by tearing. The Rike pouring spout includes vent slots which are disposed on the opposite side from the pouring hole provided through the side wall of the spout. The Robert pouring nozzle includes an air passage partitioned from the liquid passage within the interior of the nozzle.

Grant et al. (U.S. Pat. No. 3,203,665, issued Aug. 31, 1965) shows a spigot .that is disposed in contractible positions within a semi-resilient body secured around an opening through a container, the body flexing between a nesting position within the container and an extended position outside the container.

The patent to Smith (U.S. Pat. No. 3,040,938, issued June 26, 1962) shows a venting unit which is adapted for use with flexible pour spouts.

Nelson (U.S. Pat. No. 2,791,357, issued May 7, 1957) discloses an extensible pouring spout which is flexible along a portion of its length.

Finally, the patents to Malpas (U.S. Pat. No. 3,063,604, issued Nov. 13, 1962) and Parish, Jr. et al. (U.S. Pat. No. 3,235,146 issued Feb. 15, 1966) show other designs for pouring spouts with various means of providing sealing engagement of the spout within the necks of the container. A vent hole is disposed through the side of the Parish, Jr. et al. spout.

None of the prior art structures incorporate a double sealing arrangement for the pouring spouts in their operational or extended positions nor do they provide for means for circulating any vapors emitted from a liquid in the container through the spout and back into the interior of the container when the spout is in its retracted position and the container is being stored. Also, no simple, non'registrable means is provided for venting the spout in its operable or pouring position.

SUMMARY OF THE INVENTION The above disadvantages are overcome by the present invention which discloses a pouring which is operably connected to a container having a standard dispensing neck and a closure means therefor, the container being adapted to contain a supply of dispensable material, either in solid or liquid form. The device comprises a collar for removable sealing engagement with the neck and a spout slidably positioned within the collar at retracted and extended positions. The spout has an outer end portion for dispensing the material therefrom and engaging the collar in its retracted position, an inner end portion for engaging the collar at its extended position and a central passageway therethrough. The inner end portion includes vent means disposed outwardly of the central passage.

In one embodiment, the collar includes an inwardly extending shelf forming an opening through which the spout is positioned, the shelf having a plurality of spaced holes through the shelf surrounding the opening to provide a means for circulating the gaseous emissions of a volatile liquid within the container from the space formed between the closure means and the shelf into the interior of the container. The spout has an outer end portion, a flexible intermediate portion and an inner end portion. The inner end portion includes a first section which is of the same outer diameter as the outer end portion and the flexible portion, a second section having a greater diameter than the first section and an intermediate annular ledge. The second section terminates in a flared ring portion. Sealing rings on the annular ledge and the flared ring portion engage the underside of the shelf and the bottom of the collar, respectively, to form a double liquid seal when the spout is in its extended position. The spout is locked into its extended position by lugs on the exterior of the second section engaging complementary grooves on the collar. The vent means in the first embodiment has the opening through the bottom of the flared ring por tion being irregular in its cross-sectional diameter.

In the second embodiment, the spout essentially has a common outer diameter along its length and terminates in a flared bottom portion which engages the collar in a sealing arrangement. The vent means is a plurality of holes spaced from the central opening in the spout. The collar has a ledge through which the spout passes and through which are disposed a plurality of longitudinal grooves to serve .a means for circulating the vapors from a liquid through the collar into the interior of the container.

An object of the present invention is to provide a retractable flexible spout which can be operable for pouring in any position without regard for having to register the vent holes in a particular location.

Another object of the present invention is to provide a pouring device which is readily adaptable to existing dispensing necks on containers.

A further object of the present invention is to provide a self'venting pouring spout to maximize a non-pulsating rate of flow under most pouring conditions.

An object of the present invention is to provide a means for circulating through the container the vapors accumulated within the neck of the container when the container is stored and to further provide a means of venting the container when it is filled with a material through the spout.

An additional object of this invention is to provide a pouring device which is simple in construction and use, reliable in operation and safe in its pouring and stored positions.

Still other objects and advantages in the details of construction will become apparent after reading the accompanying description of one illustrative embodiment of the invention with reference to the attached drawings wherein'like reference characters have been used to refer to like parts throughout the figures of drawings, and wherein:

BRIEF DESCRIPTION OF THE FIGURES OF DRAWING FIG, 1 is an exploded, cut-away perspective view of the first embodiment of the present invention;

FIG. 2 is a side elevational cross-sectional view of the first embodiment of the spout in its extended position;

FIG. 3 is a side elevational cross-sectional view of the first embodiment of the spout in its retracted position;

FIG. 4 is an exploded, cut-away perspective view of the second embodiment of the present invention;

FIG. 5 is a side elevational cross-sectional view of the second embodiment of the spout in its extended position; and

FIG. 6 is a side elevational cross-sectional view of the second embodiment of the spout in its retracted position.

DESCRIPTION OF THE INVENTION A. First Embodiment Referring now in detail to the embodiments chosen for the purpose of illustrating the present invention, numeral 10 denotes generally the pouring device depicted in FIGS. l-3 and is the preferred embodiment.

The top 11 of a standard, conventional container 12 is partially shown in FIG. 1. The container 12 holds a supply of dispensable material, either in solid or liquid form. Extending upwardly from the top 11 of the container 12 is a cylindrical shaped, screw threaded neck 13 which is adapted to receive a closure means 14. The closure means 14, as shown, is a cap with a depending skirt having inner threaded thereon which are complementary to the threads on neck 13, for securing the closure means 14 in sealing engagement with neck 13. The closure means can be of any design, such as being adapted to be snapped onto neck 13.

A cylindrical collar 15, preferably constructed of a plastic material, is adapted to be removably secured in sealing engagement on neck 13 when the closure means 14 is removed therefrom. The collar 15 comprises an upper portion 16 with a depending bifurcated section having an outer wall 17 and a coaxial inner wall 17 spaced therefrom to receive neck 13 between walls 17 and 18. The outer surface 19 of upper portion 16 is threaded to be complementary with the threads in closure means 14. The upper portion 16 has a beveled top 20 to sealingly engage the interior of closure means 14. Upper portion 16 is of sufflcient height so as to readily receive closure means 14 thereon. When secured onto collar 15 the bottom of the closure means 14 will be adjacent the shoulder 21.

Radially extending from the inner surface 22 of upper portion 16 into the interior of collar 15 about midway its height is a shelf 23 with an opening 24 formed therethrough. The shelf 23 is positioned from top 20 a sufficient distance so as to receive the top of 4 the spout when it is in its retracted position, as will be explained in detail hereinafter. Means for circulating vapors through collar 15 when the closure means 14 is secured thereon is depicted as a plurality of holes 25 which extend through shelf 23 adjacent opening 24. The circulating means can, of course, be of any design, such as grooves around the opening 24. The underside of shelf 23 has a ridged frictional-gripping surface 26.

Outer wall 17 has a knurled outer gripping surface 27 and an inner surface 28 which is threaded to be com plementary to the threads on neck 13 such that the top of neck 13 engages top portion 29 when collar 15 is secured onto neck 13.

Inner wall 18 has an interior surface 20 which terminates in a beveled bottom 31. An r-shaped bayonet groove 32A extends along surface '30 from the bottom 31 to the shelf 23. A similar shaped groove 32B is diametrically disposed from groove 32A on surface 30.

Referring now to the spout 33, it is slidably positioned within collar 15 and more particularly within opening 24, for selective positioning at retracted and extended positions. The spout 33 is cylindrical in shape with a central passage extending therethrough and comprises an outer end portion 34 for dispensing material therefrom, an inner end portion 35 and an intermediate flexible portion 36. Disposed on the exterior of outer portion 34 adjacent the opening 37 are a pair of diametrically opposed protrusions 38. The protrusions 38 are beveled to present downwardly sloping surfaces which terminate in flat bottoms.

Positioned above protrusions 38 are protrusions 39 which are similar in shape to protrusions 38. Protrusions 39 serve two purposes, one of which is to serve as an auxiliary means of retaining spout 33 in its retracted position in the event that protrusions 38 cannot, for some reason, function for that purpose. The second purpose is that, in cooperation with ledge 40 which extends into the opening 37, the protrusion 39 and ledge 40 act as gripping surfaces for the users thumb and forefinger to lift the spout 33 from its retracted position. The shape of the protrusions 38, 39 allow the spout 33 to be inserted upwardly through opening 24 by applying a slight lateral pressure on outer portion 34 adjacent opening 37 and pressing the portion 34- through opening 24 when the device 10 is assembled.

The intermediate portion 36 is bellow-shaped so as to present a flexible, bendable portion of spout 33. The spout 33 can be bent through portion 36 in any desired pouring angle and that angle will be basically retained throughout the subsequent extensions and retractions of the pouring device 10.

The inner end portion 35 is comprised of a first section 41 which is in communication with the intermediate portion 36, a second section 42 and an annular ledge 43 which is intermediate and connecting sections 41 and 42. The outer diameter of first section 41 is substantially equal to the outer diameters of portions 34 and 36. A first resilient sealing element 44 lies on ledge 43 and is a sealing gasket.

The outer diameter of second section 42 is greater than that of section 41 but is not greater than the inner diameter of inner wall 30. Carried on the outer surface of section 42 adjacent ledge 43 are lugs 45A and B which are rectangular in shape.

Section 42 terminates in a flared ring portion 46 on which rests a second resilient sealing element 47. The outer diameter of ring portion 46 is greater than section 42 but is smaller than the inner diameter of neck 13.

Ring portion 46 terminates in a flat bottom 48 with opening 49 disposed therethrough. Disposed outwardly from opening 49 is a means for venting the container when the spout 33 is operating to pour the material from the container 12. As shown in FIG. 1, the venting means is in the form of the cross-sectional diagonal of opening 49 being irregular in length. The venting means can be of any design that will allow the simultaneous passage of material and air through spout 33 when the spout is dispensing the material from the container 12. Such a venting means eliminates the need for an additional vent through the top 1 l, as is common in liquid containers. Additionally, the venting means of the present invention allows the outer portion 34 to be positioned, by means of flexible portion 36, in any pouring angle without regard for the particular position of the venting means. The convoluted configuration of opening 49 also provides a means for easily inserting therethrough a filtering element of a selected width, shape and material if desired. The filtering element would be such that when inserted through opening 49, it would not pass back therethrough nor would it move past section 42.

The spout 33 is preferably constructed of a resilient material which is impervious to the material to be dispensed from container 12. Additionally, the length of the outer portion 34 should be sufficient to engage the nozzle on an automobile gasoline tank located in the rear of the automobile.

B. Operation of First Embodiment The pouring device can be placed in an operational state by deforming and inserting the spout 33 upward through opening 24 in collar 15. The downwardly angled surfaces on protrusions 38 and 39 permit such insertion, but their fiat bottoms prevent the downward passage of the spout 33 into the container 12.

The pouring device 10 can be readily installed on existing containers having a screw neck 13 by removing the closure means 14 from the neck 31 and securing the collar 15 thereon by means of threads on surface 28 engaging the complementary threads on neck 13. Since the outer diameter of ring portion 46 is less than the inner diameter of neck 13, the spout 33 easily passes into the interior of the container 12.

As seen in FIG. 3, the spout 33 is in its retracted position and is retained within collar 15 by means of the bottom edge of protrusions 38 engaging the top surface of shelf 23. When the closure means 14 is secured onto collar 15, vapors from the liquid in the container travel up through spout 33 and emerge from top 37 into the space between the closure means 14 and shelf 23. Without a means of venting those vapors, a buildup of pressure occurs in that space which, if the vapors are flammable, can be dangerous if a spark should ignite them when the closure means 14 is removed. Holes 25 allow a venting of that space by having the vapors pass from that space, through the space formed by inner wall 18 and into the interior of the container.

The container 12 may be filled with a liquid while the pouring device 10, comprising the collar 15 and spout 33, are on the container 12. The liquid enters through opening 37 into the spout 33 and into the container 12 through opening 49. As this filling of container 12 occurs, the holes 25 act as a vent fo r the container 12 to allow air to escape therefrom into the atmosphere. However, if the liquid filling nozzle is of a larger diameter than that of upper portion 34, and thus cannot fit through the opening 37, then the entire device 10 can be removed from the container 12 and the filling nozzle can be fitted into the neck 13 to fill the container.

When it is desired to pour from the container 12, the closure means 14 is removed, the ledge 40 and a pro trusion 39 adjacent thereto are grasped by the operators forefinger and thumb, respectively, and an upward pull is given to the spout 33. As the spout 33 is raised through opening 24 to its extended position, lugs 45A and B, if not exactly aligned with grooves 32A and B, respectively, will abut against the bottom 31 of inner wall 18. When that occurs, the spout 33 isslightly rotated clockwise until the grooves 32A and B are engaged by the respective lugs 45A and B. If desired, directional arrows could be imprinted on the top of ledge 23 which would be over the bottom openings of grooves 32A and B with corresponding arrows on the section 41 above lugs 45A and B which, when the arrows are aligned would indicate to the operator that the spout 33 is in the correct position to engage the collar 16. The spout 33 will then be slightly raised and twisted as the lugs 45A and B follow the contours of grooves 32A and B. The spout 33 will then be locked in its extended operational position, as partially seen in FIG. 2.

In the extended position, the top of the first sealing element 44 will frictionally engage the gripping surface 26 on shelf 23 and will block the holes 25, thus forming a first seal of the spout 33 within collar 15. The top of the second sealing element 47 will frictionally engage the bottom 31 to form a second seal, which will insure that no liquid material will seep out through collar 15 from the interior of container 12 when the liquid is passing out through the nozzle 33.

The flexible portion 36 is then bent to the desired pouring angle. The portion 36 should be of such design that the particular pouring angle will be retained by portion 36 after repeated use of the spout 33. Even with the portion 36 bent at an angle to the vertical, the spout 33 can still pass through opening 24 to assume the retracted position as seen in FIG. 3. Conversely, with the flexible portion 36 at an angle, the spout 36 can be extended and locked into position within the collar 15, as shown in FIG. 2.

The operator can now cause the material within containef 12 to flow through the spout 33. As the material passes through opening 49, the interior of the container 12 is vented as ai r enters through spout 33 and passes through the convoluted portions of opening 49. The liquid pours through the spout 33 at an even, controlled rate without any surging or pulsating action. Thus, it can be readily seen that the venting means of the present invention is operable under most normal pouring conditions. When the container 12 is tilted to a normal pouring position, the venting means will usually function.

When it is desired to place the spout in its retracted position as seen in FIG. 3, the operator grasps the spout 33, twists it slightly counterclockwise and presses downward to disengage the lugs 42A and B from grooves 32A and B. The spout 33 is then passed downward through opening 24 until the shelf 23 is engaged by the bottom of protrusions 38. Finally, closure means 14 is securely screwed onto collar 15.

C. Second Embodiment Referring now to the second embodiment of the invention, numeral 100 denotes generally the pouring device depicted in FIGS. 4-6.

The pouring device 100 comprises a collar 101 and a spout 102 slidably received therein and is adapted for use with a container 12 similar to that shown in FIG. 1. Neck 13 on the container 12 is closed by closure means 14.

The collar 101 comprises an upper portion 103 whose outer surface is formed with screw threads which cooperate with similar screw threads within the closure means 14 for securing the closure means 14 onto the collar 101. The upper end of portion 103 is beveled at 104 for sealing engagement with the interior of the closure means 14. The interior of the collar 101 has a stepped interior wall design with an upper cylindrical wall portion 105, an intermediate inwardly extending ledge 105 and a lower cylindrical wall portion 107 terminating in a veceled edge 108.

A plurality of spaced passages 109 are longitudinally disposed through wall portion 107. Also positioned on wall portion 107 are a pair of diametrically opposed bayonet grooves 110A and B the top ends of which are through shelf 106 to form openings 111. The wall portion 107 forms an opening through the collar 101 for receiving spout 102.

Upper portion 103 terminates in an outwardly extending shoulder portion 112 from which depends a lower portion 113 which is spaced from and coaxial with lower wall portion 107. The outer surface of portion 113 has a plurality of longitudinally spaced ridges to aid in gripping the collar 101. The inner surface of portion is threaded to be complementary with the threads on neck 13.

The spout 103 has a central passageway therethrough and comprises an outer end portion 114 for dispensing the material therethrough, an inner end portion 115 and a flexible portion 116'which is intermediate of and communicates with portions 1 14 and 1 15. Adjacent the pouring opening 117 on portion 114 are a pair of diametrically opposed wedge-shaped protrusions 118.

Below and spaced between protrusions 118 on the outer surface of portion 114 are a pair of diametrically opposed projections 119 which are similar in shape to protrusions 118.

Portion 116 is constructed in an accordian pleat design to allow it to be flexible and to retain as much as possible the shape into which it is bent.

Portion 115 has the same outer diameter as portions 114 and 116 to allow the selective positioning of the spout 102 within the opening formed by wall portion 107 and has two square-shaped lugs 120A and B for mating engagement with grooves 110A and B, respectively. Portion 115 terminates in a flared ring 121 to form annular ledge 122. Ring 121 is of a greater outer diameter than portion 115 and portion 107 but is of a smaller outer diameter than lower portion 113. Positioned on ledge 122 is a resilient sealing element 123. The ring 121 terminates in a flat bottom 124 through which is centrally disposed opening 125. Disposed outwardly of opening 125 and coaxial therewith are a plurality of spaced vent holes 126 through bottom 124.

C. Operation of Second Embodiment The operation of device 100 is very similar to the operation of pouring device 10. To place the spout 102 within the collar 101, a slight lateral pressure is applied to portion 114 and it is then pushed upward through the opening formed by portion 107 by means of protrusions 118 engaging the bottom of grooves A and B, twisting spout 102 to follow the contours of grooves 110A and B until protrusions 118 emerge through openings 111. Projections 119 are positioned on portion 114 such that when protrusions 118 extend through openings 111, projections 119 engage the bottom of grooves 110A and B. The process is thus repeated again to lift projections 119 through grooves 110A and B. The spout 102 is then slightly rotated so that it will then be prevented from passing through collar 101 by the underside of projections 1 19 engaging the ledge 107, indicated as in FIG. 6.

The collar 101 is secured onto neck 13 by means of the threads on the inner surface of portion 113 engaging the complementary threads on neck 13. When closure means 14 is secured onto upper portion 103, the spout 102 is in its retracted position as shown in FIG. 6. In the second embodiment, any vapors that collect in the space between the ledge 107 and the closure means 14 are circulated back to the interior of container 12 through grooves 109.

When it is desired to place spout 102 at its operative position, the closure means 14 is first removed. Portion 114 is then grasped by means of projections 118 and lifted upwards until the lugs A and B abut edge 108. The spout 102 is then rotated until the lugs 120A and B engage grooves 110A and B. The spout 102 is then raised upwardly and twisted slightly clockwise so that lugs 120A aand B are secured into the grooves 110A and B. When that occurs, element 123 is in sealing engagement with edge 108 to form a liquid seal in the collar 101 and the spout 102 is in its extended position as seen in FIG. 5. The flexible portion 116 can then be bent to allow portion 114 to assume the desired pouring position. As the material is poured through opening and into the central passageway, holes 126 serve to vent the interior of the container 12 without the need for an auxiliary venting means on container 12. Also, the vent means of the present invention is operable without concern for registering the spout 102 within collar 101 in any particular position when the spout 103 is extended.

When it is desired to place the spout 102 in its retracted position, it is grasped and rotated counterclockwise and pressed downward so that lugs 120A and B can be disengaged from the grooves 110A and B, with the spout 102 being retained within collar 101 by means of projections 119 resting on ledge 107. If the user was to inadvertently allow the projections 119 to pass through openings 111, protrusions 118 engaging the ledge 106 will prevent the spout 102 from completely passing through the collar 101.

As with pouring device 10, the container 12 with device 100 thereon can be filled with a material either directly through the central passageway of spout 102 when the spout 102 is in its retracted position or the device 100 can be completely removed from the container 12 and the material enter through neck 13. If a liquid is being poured into the container through spout 102, the grooves 109 will serve to vent the interior of the container 12.

What is claimed is:

1. A double sealing pouring assembly for operable connection to a container having a dispensing neck and which is adapted to contain therein a supply of dispens- 9 ing material, comprising:

a. a closure means for said dispensing neck;

b. a collar for removable sealing engagement with said neck, said collar including an upper portion for selected sealing engagement with said closure means and a bifurcated section depending therefrom which engages said neck therebetween; and,

c. a spout slidably positioned within said collar for selective positioning at retracted and extended positions, said spout having an outer end portion for dispensing said material therefrom, an inner end portion for engaging said collar at said extended position and a central passage extending therethrough;

said bifurcated section of said collar including an outer wall whose inner surface engages the exterior of said dispensing neck, and an inner wall having a radially extending shelf with an opening therethrough for slidably receiving said spout;

said inner end portion having a section of greater diameter than said central passage and being in communication therewith by means of an intermediate annular ledge, said section terminating in a flared ring portion; and

wherein said assembly is provided with a means for locking said spout within said collar when said spout is in its extended position, said locking means comprising a protrusion and a groove for mating engagement with said protrusion, whereby said annular ledge engages the underside of said shelf and said ring portion engages the bottom of said 10 inner wall to provide a double seal for said spout in its extended position.

2. A double sealing pouring assembly as claimed in claim 1 wherein said assembly is provided with means for retaining said spout within said collar when said spout is in its retracted position within said collar, said retaining means including a protrusion carried on said spout which engages said shelf so as to prevent said spout from passing through said collar into said container.

3. A double sealing pouring assembly as claimed in claim 1 wherein said assembly is provided with first and second sealing means for said spout in its extended position, said sealing means comprising first and second resilient elements for engagement with said ledge and the underside of said shelf and with said ring portion and the bottom of said inner wall, respectively.

4. A double sealing pouring assembly as claimed in claim 3 wherein said first element is on said ledge and wherein said second element is on said ring portion.

5. A double sealing pouring assembly as claimed in claim 1 wherein said protrusion is carried on the exterior surface of said section and said groove is on the interior surface of said inner wall.

6. A double sealing pouring assembly as claimed in claim 5 wherein said groove is r-shaped, upwardly extending from said bottom of said inner wall along a portion of the height of said inner wall and then radially extending along said inner wall. 

1. A double sealing pouring assembly for operable connection to a container having a dispensing neck and which is adapted to contain therein a supply of dispensing material, comprising: a. a closure means for said dispensing neck; b. a collar for removable sealing engagement with said neck, said collar including an upper portion for selected sealing engagement with said closure means and a bifurcated section depending therefrom which engages said neck therebetween; and, c. a spout slidably positioned within said collar for selective positioning at retracted and extended positions, said spout having an outer end portion for dispensing said material therefrom, an inner end portion for engaging said collar at said extended position and a central passage extending therethrough; said bifurcated section of said collar including an outer wall whose inner surface engages the exterior of said dispensing neck, and an inner wall having a radially extending shelf with an opening therethrough for slidably receiving said spout; said inner end portion having a section of greater diameter than said central passage and being in communication therewith by means of an intermediate annular ledge, said section terminating in a flared ring portion; and wherein said assembly is provided with a means for locking said spout within said collar when said spout is in its extended position, said locking means comprising a protrusion and a groove for mating engagement with said protrusion, whereby said annular ledge engages the underside of said shelf and said ring portion engages the bottom of said inner wall to provide a double seal for said spout in its extended position.
 2. A double sealing pouring assembly as claimed in claim 1 wherein said assembly is provided with means for retaining said spout within said collar when said spout is in its retracted position within said collar, said retaining means including a protrusion carried on said spout which engages said shelf so as to prevent said spout from passing through said collar into said container.
 3. A double sealing pouring assembly as claimed in claim 1 wherein said assembly is provided with first and second sealing means for said spout in its extended position, said sealing means comprising first and second resilient elements for engagement with said ledge and the underside of said shelf and with said ring portion and the bottom of said inner wall, respectively.
 4. A double sealing pouring assembly as claimed in claim 3 wherein said first element is on said ledge and wherein said second element is on said ring portion.
 5. A double sealing pouring assembly as claimed in claim 1 wherein said protrusion is carried on the exterior surface of said section and said groove is on the interior surface of said inner wall.
 6. A double sealing pouring assembly as claimed in claim 5 wherein said groove is r-shaped, upwardly extending from said bottom of said inner wall along a portion of the height of said inner wall and then radially extending along said inner wall. 